<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Title</title>
    <style>
        .a{
            text-decoration: underline;
        }
        .b{
            background-color: #dedede;
        }
        .c{
            color: brown;
        }
    </style>
    <script src="./js/05.js"></script>
</head>
<body>
    <h1 id="h1Dom" class="a b c" itany="cccc">aaa</h1>
    <input type="button" value="更新样式" onclick="changeH1DomClass()">
    <hr>
    <h2 id="h2Dom" style="color:brown;font-weight: bolder;">style属性的操作</h2>
    <hr>
<!--    <input type="text" id="inputDom" disabled>-->
    <input type="text" id="inputDom">
</body>
</html>